Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
So you’re able to best understand the aftereffect of the new crossbreeding into sexual precocity of crossbreed pets, the fresh new AFC try reviewed according to: crossbreed method of, competition out of sire mothers (bull and inseminated local cattle), hybridization level and inventory facilities
The fresh imply years at first calving for everyone breeds developed is ± weeks, representing around three-years (2 years eleven months 19 days ± eleven weeks twenty four hours). Probably the most precocious heifers calved contained in this two years ( months). To own fifty% from heifers, earliest calving is at days. The initial functions took place on average on ± weeks ( to days).
The fresh imply AFC of crossbreeds try below the individuals claimed among the many Zebu within the tropics at over forty weeks reported in lots of degree ( Rahman ainsi que al., 2016 ; Tellah mais aussi al., 2015a , 2015b ; Bashir and you can Este Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Some experts provides advertised abilities most next to our observance on different crossbreeds into the Africa, regardless of cow types utilized in new test: 34 months among the many Montbeliard crossbreeds from inside the Algeria ( Madani and you will Mouffok, 2008 ) and you may Morocco ( Srairi and you may Mousili, 2014 ), ± 0.43 weeks on Girolando hybrid from inside the Benin ( Doko sitio web de citas de agricultores mais aussi al., 2012 ). It had been an identical to the Holstein-Friesian crossbreed cattle inside the Ethiopia within thirty-six.cuatro ± 1.eight weeks, this new Borgou and you will Lagunaire types in the thirty six.step one ± 6.29 months in the Benin ( Adamou-Ndiaye et al., 2003 ) and also in the latest Azawak Zebu at the thirty-six.5 ± cuatro.10 and you can ± 13 months in the Niger ( Achard and you may Chanono, 2006 , 1997 ).
All of our observance are higher than men and women said by the Genzebu ainsi que al. (2016) certainly one of hybrid cattle for the Kenya (twenty six.nine ± 5.4 and you will twenty seven.0 ± step 3.eight months). It actually was slightly better than the fresh observations by Ngodigha mais aussi al. (2009) of 29.seven ± 2.5 months one of crossbreeds (Holstein x Bunadji) when you look at the Nigeria, Ben Salem ainsi que al. (2009) from 29.seven ± 4.1 year inside the Holstein during the Tunisia and you may Srairi and you may Mousili (2014) from 31 days in Montbeliard for the Morocco. Specific version activities associated with the AFC was basically reviewed to achieve the statements.
One of several other crossbreeding sizes identified ( Desk step 1 ), the latest Fulani Zebu (FZ) inseminated that have sperm away from Montbeliard (MB x FZ) and you will Alps Brownish (Abdominal x FZ) has actually delivered the absolute most precocious corssbreeds (first calving during the 24 months) (5%). While, the brand new inseminations away from Fulani Zebu cattle towards the semen regarding Holstein (HT x FZ) and you can out-of Tarentaise (T x FZ) then the insemination off Gudali Zebu cows which have sperm out of Montbeliard (MB x GZ) possess produced the fresh precocious crossbreed cattle.
The minimum is weeks therefore the restriction is actually weeks
Dining table step 1: Decades initially calving (months) considering crossbreeding enter in whole milk cattle farms in the area from Bobo-Dioulasso into the Burkina Faso
The analysis focused on the new reproduction track of twenty (20) crossbreed cows as a consequence of the fresh new interbreeding from fake insemination ranging from regional reproduce cows (Gudali Zebu and you will Fulani Zebu) and you will amazing reproduce bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). These types of crossbreeds was basically born anywhere between 1999 and you may 2010 and you may gave the basic calf anywhere between 2002 and you may 2012 towards around three enhanced inventory farms during the urban and you can residential district regions of Bobo-Dioulasso. Each one of these facilities has actually about 50 crossbreed cattle into the design. The original ranch is found in a city, the next ten Kilometer aside in the south log off and also the 3rd 60 Km aside during the eastern leave from Bobo-Dioulasso. Preliminary studies ranging from on these elements helped to pick such about three facilities with a cattle sign in (temperatures and you can fake insemination monitoring sheet sets). Situations connected with private tabs on creature reproduction including calving dates, times of the basic heats and you can inseminations were filed every single day from the the newest cattlemen therefore the inseminators. The latest exploitation of these files made it you’ll be able to to choose twenty (20) first calving’s comparable to the original features. These types of farms was described as the presence of forgotten, a good herd wellness overseeing, a led reproduction setting (primarily AI, to own shortage of a selected bull), brand new concentrate provides (cotton cake or cottonseed and you may industrial malt) on ration feeding and you will intensive shipping off silage and you can agricultural by the points. The actual only real reason for this process method of is the manufacturing and you can sales off yourself canned milk products, twice daily (early morning and nights). The fresh focuses was offered into the dogs on their get back out of grazing and also in the latest morning within milking go out.