Profitable seasonal calving dairy production systems require a cow tha terjemahan - Profitable seasonal calving dairy production systems require a cow tha Bahasa Indonesia Bagaimana mengatakan

Profitable seasonal calving dairy p

Profitable seasonal calving dairy production systems require a cow that will establish
pregnancy early in the breeding season implying a quick return to service post-calving
and good pregnancy rates. Genetic selection provides an opportunity to achieve this
goal so therefore the objective of this study was to estimate the necessary genetic
parameters for fertility traits, pertinent to seasonal calving herds, in order to facilitate
genetic selection for fertility. The data, following editing, consisted of parity 1 to 3
records on up to 397,373 Holstein-Friesian dairy cows in Ireland. Variance components
for the defined interval fertility traits (age at first calving, calving to first service interval,
calving interval), binary fertility traits (submission rate in the first 21 days of the
breeding season, pregnant to first service, pregnant in the first 42 days of the breeding
season, calved in the first 42 days of the calving season) and the count fertility trait
(number of services) were estimated using univariate animal models and covariances
among traits were estimated using bivariate sire models. Heritability estimates of the
nine fertility traits (including age at first calving and survival) varied from 0.01 to 0.07
within parity one to three. The coefficient of genetic variation for the fertility traits varied
from 3.3% to 15.3%. Calving to first service interval, within parity, was moderately
positively genetically correlated (0.54 to 0.75) with calving interval and was, in general,
moderately negatively correlated with both submission rate (-0.68 to -0.29) and pregnant
in the first 42 days of the breeding season (-0.36 to -0.14). Calving interval was
moderately positively correlated (0.24 to 0.68) with number of services. Irrespective of parity, the genetic correlations between calving interval with calving in the first 42
days of the calving season, and submission rate with pregnant in the first 42 days of
the breeding season were all negative. The genetic correlations among calving in the
first 42 days of the calving season, submission rate and pregnant in the first 42 days of
the breeding season were all positive. All fertility traits were generally antagonistically
genetically correlated with lactation milk yield, but most were moderate to strongly
favourably correlated with survival to the next lactation. This study provides the necessary
genetic parameters to undertake national genetic evaluations for fertility to help
achieve the fertility targets in seasonal calving herds.
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Profitable seasonal calving dairy production systems require a cow that will establishpregnancy early in the breeding season implying a quick return to service post-calvingand good pregnancy rates. Genetic selection provides an opportunity to achieve thisgoal so therefore the objective of this study was to estimate the necessary geneticparameters for fertility traits, pertinent to seasonal calving herds, in order to facilitategenetic selection for fertility. The data, following editing, consisted of parity 1 to 3records on up to 397,373 Holstein-Friesian dairy cows in Ireland. Variance componentsfor the defined interval fertility traits (age at first calving, calving to first service interval,calving interval), binary fertility traits (submission rate in the first 21 days of thebreeding season, pregnant to first service, pregnant in the first 42 days of the breedingseason, calved in the first 42 days of the calving season) and the count fertility trait(number of services) were estimated using univariate animal models and covariancesamong traits were estimated using bivariate sire models. Heritability estimates of thenine fertility traits (including age at first calving and survival) varied from 0.01 to 0.07within parity one to three. The coefficient of genetic variation for the fertility traits variedfrom 3.3% to 15.3%. Calving to first service interval, within parity, was moderatelypositively genetically correlated (0.54 to 0.75) with calving interval and was, in general,moderately negatively correlated with both submission rate (-0.68 to -0.29) and pregnantin the first 42 days of the breeding season (-0.36 to -0.14). Calving interval wasmoderately positively correlated (0.24 to 0.68) with number of services. Irrespective of parity, the genetic correlations between calving interval with calving in the first 42days of the calving season, and submission rate with pregnant in the first 42 days ofthe breeding season were all negative. The genetic correlations among calving in thefirst 42 days of the calving season, submission rate and pregnant in the first 42 days ofthe breeding season were all positive. All fertility traits were generally antagonisticallygenetically correlated with lactation milk yield, but most were moderate to stronglyfavourably correlated with survival to the next lactation. This study provides the necessarygenetic parameters to undertake national genetic evaluations for fertility to helpachieve the fertility targets in seasonal calving herds.
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Hasil (Bahasa Indonesia) 2:[Salinan]
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Menguntungkan sistem produksi calving susu musiman memerlukan sapi yang akan membangun
kehamilan awal musim kawin menyiratkan kembali cepat ke layanan pasca-calving
dan tingkat kehamilan yang baik. Seleksi genetik memberikan kesempatan untuk mencapai hal ini
tujuan jadi karena tujuan dari penelitian ini adalah untuk memperkirakan genetik yang diperlukan
parameter untuk ciri-ciri kesuburan, yang berkaitan dengan kawanan calving musiman, dalam rangka memfasilitasi
seleksi genetik untuk kesuburan. Data, editing berikut, terdiri dari paritas 1-3
catatan pada hingga 397.373 sapi perah Holstein-Friesian di Irlandia. Komponen varians
untuk ciri-ciri kesuburan interval yang ditentukan (usia calving pertama, melahirkan hingga interval pertama layanan,
calving interval), ciri-ciri kesuburan biner (tingkat pengajuan dalam 21 hari pertama dari
musim kawin, hamil untuk layanan pertama, hamil pertama 42 hari dari peternakan
musim, calved di 42 hari pertama musim calving) dan sifat kesuburan count
(jumlah layanan) diperkirakan dengan menggunakan model hewan univariat dan covariances
antara sifat-sifat yang diperkirakan menggunakan model Sire bivariat. Perkiraan heritabilitas dari
sembilan ciri-ciri kesuburan (termasuk usia melahirkan pertama dan kelangsungan hidup) bervariasi 0,01-0,07
dalam paritas 1-3. Koefisien variasi genetik untuk sifat-sifat kesuburan bervariasi
dari 3,3% menjadi 15,3%. Melahirkan hingga interval servis pertama, dalam paritas, itu cukup
berkorelasi positif genetik (0,54-0,75) dengan calving interval dan, secara umum,
cukup berkorelasi negatif dengan kedua tingkat pengajuan (-0,68 untuk -0,29) dan hamil
di 42 hari pertama musim kawin (-0,36 untuk -0,14). Calving interval yang
cukup berkorelasi positif (0,24-0,68) dengan sejumlah layanan. Terlepas dari paritas, korelasi genetik antara calving interval dengan calving di 42 pertama
hari musim calving, dan tingkat penyerahan dengan hamil di 42 hari pertama
musim kawin semua negatif. Korelasi genetik antara calving di
42 hari pertama musim calving, tingkat pengajuan dan hamil di 42 hari pertama
musim kawin semua positif. Semua ciri-ciri kesuburan umumnya antagonis
genetik berkorelasi dengan produksi susu laktasi, tetapi sebagian besar adalah sedang sampai kuat
menguntungkan berkorelasi dengan kelangsungan hidup ke laktasi berikutnya. Studi ini memberikan diperlukan
parameter genetik untuk melakukan evaluasi genetik nasional untuk kesuburan untuk membantu
mencapai target kesuburan dalam kawanan calving musiman.
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