Geographie des races bovines laitieres en France
1956
Miedema, D.D.
The actual distribution of breeds of dairy cattle in France did not accord with a planned agricultural economy. A study was made of the causes of this discrepancy.Historical reasons were of great influence and curious measures had been taken to counteract the introduction of carefully selected breeds, adapted to modern agriculture methods.With the introduction of artificial insemination under supervision of thoroughly instructed people Friesian cattle had increased their distribution as they were the only breed with sufficient number of good breeding males.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Wageningen University & Research