This indicates you to hybrid cattle was sexually a great deal more precocious than simply tropical cows ( Wassie et al
To top see the effectation of brand new crossbreeding towards sexual precocity regarding hybrid animals, the latest AFC is actually analyzed considering: crossbreed sort of, battle away from sire mothers (bull and you will inseminated local cattle), hybridization peak and you can inventory facilities
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.
The fresh new imply years initially calving for everybody types built is actually ± days, symbolizing everything 3 years (2 yrs 11 days 19 weeks ± 11 weeks twenty four hours). Minimal was weeks and also the maximum try weeks. To possess 50% away from heifers, earliest calving was at months. The first characteristics took place typically within ± weeks ( so you can days).
The newest indicate AFC of your own crossbreeds was less than people claimed among Zebu in tropics during the more 40 days claimed in lot of knowledge ( Rahman mais aussi al., 2016 ; Tellah et al., 2015a , 2015b ; Bashir and Este Zubeir, 2013 ; Sokouri mais aussi al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Some authors enjoys said overall performance extremely near to our observation into other crossbreeds for the Africa, regardless of cow breeds utilized in the newest test: 34 days among Montbeliard crossbreeds during the Algeria ( Madani and you can Mouffok, 2008 ) and Morocco ( Srairi and you may Mousili, 2014 ), ± 0.43 days regarding Girolando crossbreed when you look at the Benin ( Doko mais aussi al., 2012 ). It was a comparable for the Holstein-Friesian crossbreed cows within the Ethiopia on thirty-six.cuatro ± step 1.seven months, brand new Borgou and you may Lagunaire breeds from the thirty six.step 1 ± 6.29 weeks inside the Benin ( Adamou-Ndiaye ainsi que al., 2003 ) and in the fresh new Azawak Zebu on thirty six.5 ± cuatro.ten and you may ± thirteen days into the Niger ( Achard and you will Chanono, 2006 , 1997 ).
Our observance try more than those people stated by the Genzebu ainsi que al. (2016) certainly hybrid cattle for the Kenya (26.nine ± 5.4 and you will twenty-seven.0 ± step three.7 months). It absolutely was some a lot better than the new observations from the Ngodigha et al. (2009) out-of 30.7 ± dos.5 months among crossbreeds (Holstein x Bunadji) in Nigeria, Ben Salem mais aussi al. (2009) of 31.7 ± cuatro.one year inside https://datingranking.net/religious-dating/ Holstein in the Tunisia and you will Srairi and Mousili (2014) away from 31 months for the Montbeliard for the Morocco. Certain type facts associated with the AFC was reviewed to reach the statements.
One of several different crossbreeding versions known ( Dining table step 1 ), the latest Fulani Zebu (FZ) inseminated that have semen regarding Montbeliard (MB x FZ) and Alps Brownish (Abdominal x FZ) has introduced more precocious corssbreeds (first calving during the a couple of years) (5%). Whenever you are, this new inseminations away from Fulani Zebu cattle towards sperm out of Holstein (HT x FZ) and you may out-of Tarentaise (T x FZ) then the insemination away from Gudali Zebu cattle which have semen away from Montbeliard (MB x GZ) features delivered the latest precocious hybrid cows.
Probably the most precocious heifers calved within this 2 yrs ( months)
Dining table step one: Ages initially calving (months) according to crossbreeding input milk cattle farms in the area regarding Bobo-Dioulasso within the Burkina Faso
The analysis worried about new reproduction track of twenty (20) crossbreed cows due to brand new interbreeding through the artificial insemination between local breed cattle (Gudali Zebu and Fulani Zebu) and amazing breed bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). These types of crossbreeds was created anywhere between 1999 and 2010 and provided the earliest calf anywhere between 2002 and you can 2012 on around three increased inventory farms in metropolitan and you will suburban aspects of Bobo-Dioulasso. Each one of these farms have throughout the 50 crossbreed cattle in the design. The original ranch is situated in an urban area, another ten Kilometres out at the south get off therefore the third sixty Kilometer aside at the east get-off of Bobo-Dioulasso. Initial surveys between in these section aided to select this type of around three facilities having a livestock register (temperatures and you can artificial insemination monitoring sheets). Events associated with individual monitoring of animal breeding such calving dates, schedules of your own first warms and inseminations was indeed filed each day by the the cattlemen while the inseminators. This new exploitation of them data files managed to get you can easily to choose twenty (20) first calving’s equal to the initial qualities. These types of farms try described as the existence of forgotten, good herd fitness keeping track of, a led breeding means (primarily AI, to have insufficient a specified bull), this new concentrate supplies (pure cotton pie or cottonseed and you will commercial malt) regarding the ration giving and you can rigorous shipments away from silage and you will agricultural by factors. The only reason for so it operation types of is the production and you may product sales from by hand processed milk products, twice daily (morning and night). The brand new focuses are offered into the pets on their go back off grazing and in the morning during the milking day.