دورية أكاديمية
Genetic relationship between weaning weight and milk yield in Nguni cattle.
| العنوان: | Genetic relationship between weaning weight and milk yield in Nguni cattle. |
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| المؤلفون: | Nesengani LT; 1Animal Production Institute (ARC),Animal Breeding and Genetics Programme,Private Bag X2,Irene, 0062,South Africa., Nephawe KA; 2Tshwane University of Technology (TUT),Private Bag X680,Pretoria, 0001,South Africa., Sebei J; 3Limpopo Department of Agriculture,69 Biccard Street,Private Bag X9487,Polokwane, 0700,South Africa., Norris D; 4University of Limpopo,Turfloop Campus,Private Bag X1106,Sovenga, 0727,South Africa., Maiwashe A; 1Animal Production Institute (ARC),Animal Breeding and Genetics Programme,Private Bag X2,Irene, 0062,South Africa. |
| المصدر: | Animal : an international journal of animal bioscience [Animal] 2018 Feb; Vol. 12 (2), pp. 199-204. Date of Electronic Publication: 2017 Jul 11. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Country of Publication: England NLM ID: 101303270 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1751-732X (Electronic) Linking ISSN: 17517311 NLM ISO Abbreviation: Animal Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2021- : [London] : Elsevier Original Publication: Cambridge, England : Cambridge University Press |
| مواضيع طبية MeSH: | Body Weight/*genetics , Cattle/*genetics , Lactation/*physiology , Milk/*metabolism, Animals ; Breeding ; Cattle/physiology ; Female ; Lactation/genetics ; Male ; South Africa ; Weaning |
| مستخلص: | A study was conducted to estimate the genetic relationship between weaning weight and milk yield in Nguni cattle. Milk yield data (n=125) were collected from 116 Nguni cows from Mara Research Station located in Limpopo Province and Loskop South Farm located in Mpumalanga Province using the weigh-suckle-weigh technique. Weaning weight data (n=19 065) were obtained from stud Nguni cattle from 146 herds distributed throughout South Africa. Estimates of (co)variance components for milk yield and weaning weight were calculated using PEST and VCE softwares. The average weaning weight, age of the calf at weaning and 24-h milk yield was 158.94 kg, 210 days and 5.25 kg/day, respectively. Heritability estimates for milk yield, direct and maternal weaning weight were 0.22±0.238, 0.47±0.039 and 0.25±0.029, respectively. Estimates of genetic correlations for milk yield and maternal weaning weight, milk yield and direct weaning weight, direct and maternal weaning weight were 0.97±0.063, -0.71±0.416 and -0.56±0.247, respectively. The results indicate that maternal weaning weight is genetically highly predictive of milk yield in Nguni cattle. Maternal breeding values for weaning weight could therefore be used as a selection criterion to improve milk yield in Nguni cattle. |
| فهرسة مساهمة: | Keywords: genetic correlation; heritability; maternal effects; milk yield; weaning weight |
| تواريخ الأحداث: | Date Created: 20170712 Date Completed: 20180620 Latest Revision: 20180620 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1017/S1751731117001483 |
| PMID: | 28695793 |
| قاعدة البيانات: | MEDLINE |
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