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1986
Kuzniewicz J.
The data of 1,030 litters were analysed. The highest number of puppies at birth was noted in females, two years old, and the highest number of reared ones in females, 4 and 7 years old. The female age and litter size effects on the sex ratio of puppies were significant. The highest number of males was obtained from females 2 and 3 years old in litters with 1 to 9 puppies.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Wolters Kluwer